I'm pretty sure I meant X axis (Left to right motion). I was/am on little sleep.
I setup my material on the bed, set the origin of the laser head to the center of the material, focus and then run job. After any amount of time at some point I hear a little noise, not even disturbing ( maybe a stepper noise, hard to describe) and the laser is off center to the right a few inches, it just keeps lasering away and ruining my piece. When I power the machine off and on, it homes itself but instead of returning to the origin I set in the middle of the material (or the off skew one to the right of center) its now to the left of the original origin I set in middle of material. Any ideas on what would cause this?
I have checked and tightened belts, checked for any screws loose (besides me).
I was running at 400mm/sec